21st Feb. 2020

Structure of the talk

  • What is it that I do?
    • Rationale
    • Current strategy
  • What have I done so far?
    • rep("debug", \(\infty\))
  • Medium-term espectations

Flash intro


“all models are wrong, but some are useful” (Box, 1979).

Maximum Sustainable Yield

Nash equilibrium?

Model selection

Rpath vs ECOPATH

Rsim vs ECOSIM



\(\overline{Error(\%)}=-0.025\) with no external abiotic forcing (e.g. fishing effort or egg production time series).

Medium term goals

  • To wrap a 2nd functional iteration of the Rpath package;
  • To compute NE MSY solutions for the North Sea ecosystem with Rpath2 (ecopaRth?) to assess tradeoffs between current management practices (i.e. single species management) and the so-called Ecosystem-Based Fisheries Management to ultimately find optimal mixtures of stocks; and
  • To, perhaps, evaluate the predictability of these optima and their required management intensity taking into consideration inherent uncertainties.